Variable-speed driving mechanism.



P. T. KENNY. VARIABLE SPEED DRIVING MECHANISM.

APPLIQATION FILED JULY 14, 1908,,

.- 93 ,326, Patented o'qt. 1 2,1909.

Z/VVE TOR;

To all ti lioni it may (Ollt'tIN-J I lie -it known that l. Run. "l."KENNY; a

eitizeu'of thellnited States. residing in the borough of Manhattan. inthe count). eitv. v 9 v i a and btate of hew \ork. have invented certainnew andaisefulImprovements in Varis I able-Spou Driving Mechanism. ofwhich the following 18.3 s ieeilieation. snehas will enableothersQsKi-ll in theart to which it t pertains tomake and use the same.The. object of my invention is to present a variable speed drivingmechanism particularly' suitable'for printing presses. though "capableof other applications. .Ainong the objects is the avoidance oftelescopic driving eonneetions; -and the invention, roughly outlined,consists in the combination with a driven gear, ofamotor' and a boneofdriving gears. a'roek shaft sup 2o porting the motor and cone ofgears, and an operating handle. for roekin and longitut inally shiftingthe, rook shatt with the s up-' ported motor and cone of gears. i 'Otherfeatures o'f the invention will become clear from the followingspecification and-'will be'specitied in the appended claims.

-' "l n the drawil igs, Figure l is a side view of a )rinting pressprovided with my variable "peed driving mechanism; Fig. 2 is a rear3o.view of the same'.'the,top portion ofthe press being broken away:Fig.3 is an 'ew of ,the reverse side ofthe press from that shownin Fig.1, the top part being hrokenhway,

as also the lower portion of the leverQG; Rig.

4 is arear view of the printing press, the motor, cone of driving gears,and operating members being omitted to'show the parts in froittyand Fig.5 is a detail of the slotted bracketfor receiving the operating handle.

The reference letter A designates any suitable frame of the printingpress. B the shaftof the fly wheel. C the tl v wheel. D inkingniechanisnnand E the-platen. No etl'ort has been made to illustrate anoperative press. The tl' v wheel C may be referred to as the drivengear; but it. is obvious that the driven gear need not be a fi v wheehThe letter I designates an electric motor. whose armature shaft 13carries a cone of I driving gears 17. and preferably. also, an

extra pulley 18. The shaft 13 may be sus-, tained by journal arms 1*projecting upward. from a bracket 16 secured at its inner end to themotor-base. The base of the motor I is rigidly seeured to asupportiugroek shaft Specification-of Letters Patent. PatentedItch;Application filed m 14;1 90s; semi no.4'4spssoj l 19. 'wliieh is mountedin the frame. A.

This lower end of .the; bracket "ll'iis c on the bracket 29.

rotata and longitudinally shifting'the rook shaftTQ-is as follows: 21 isa bracket'li:ivii1gat,its lower end a squared opening in whieh isre-i-eeived a squared portion 24 of the shaft-19.

neeted pivotally with the outer side ofthe frame member A by curvedslots 23 and b'olts the braeket- 21 on an axis perpendicular to thepivotal axis of the braeket 21," as 'at25,

. mg lever has universal oint eonnec tion' 'witlr the rock shaft 19, asat 28. The upper poi? tion of the operating lever or handle 26' isreceived in'slots 1.2, 3, or 4' of abra'cket \Vhen the lever rests inslot 1 the-largest '15" gear-0f the cone 17 1s in'posltion' to engagethe fly wheel (1; .slots 2 and 0 correspond, with the i'uiddles1zed' andsmallest 'gear'of the cone 1'2"; -Ot eourse.' there mav bez nore'" thanthree s eeds. if desired. Thebottom of the slotl 1s suflieiently' inadvance of thebottoms of the other slots, so-that. when the handle 26 isinthis slot, the rh'otorT and the cone 1? are rocked so. that noneLofthe driving gears can engagd, with the fiv'wheelfc.

A spring 20 (see' .beiutilized' as means for holdingthe' seven' lgearsof the. cone 1;? in engagement with the flywheel and 'tlie handle 26 inthe slots or notches of; i

The motor circuit is indicated at 61, 62, and may be broken by amovablecontact-39, mounted in lever 30 and adapted to engage with the.stationary contacts 37 This lever" 30 is shown as pivoted intermediateits length. as at. 99. to one side of'the printing press frame, beingprovided at its outer end with a brake shoe 31 for engaging the flywheel C and at its inner end with a link 32 pivoted at 33 and 34 to thelever 30 and the treadle or foot lever H,Irespectively. The

arrangement is'such'that depression of the t-readle' H breaks the motoreirenit and applies the, brake 31; the treadlegbeingnormally heldelevated, as by a spring 40.

The furniture cutting saw L-, m ou nted .in conjunction with a. table Gsupported by a bracket F, and connected with the pulley 18, is anexample 0f= 1nechan'isin that may be driven from this extra pulley, whenthe cone 110 of gears 17 is locked out of engagement with l' the drivenWheel 0. WVhen the motoris not i'op'efating, 'thewheel C, and therefore,the

prmting press may be driven by foot power. 5xjfrom the treadle H, bymeans of a rod 12 ithat may connect the treadle and a crank on the shaftB. Of course, when the rod or-link 12 is'connected between the treadleand the driven mechanism, the lever 30 will be distreadle H. Thesaw Lmay also be driven connected inany suitable fashion from the from thetreadle H,'"-one of the cone of gears "17 being in engagement with thefly wheel G. Under such circumstances, the motor circuit will be open sothat", the motor will not;

"act as a'brake. I i I Preferably-the. cone of'gears 17 and. the

wheel C constitute a friction drive,'bu t this.

; ;the combination of'a driven gear, a motor I 3- and a cone of drivinggears, a longitudinally movable rock shaft supporting said motor "andcone of gears, and an operating handle of gears.

' and -a cone of driving gears, a longitudinally movable rock shaftsupporting said motor.

need not always be the case.

What I claim. as newis:

1. In a variable speed driving mechanism,

for rocking and longitudinally shifting said "Frock shaft and thesupported motor and cone I 2. In a variable speed driving mechanism,

the combination of a driven gear, a motor and cone of gears, anoperating handle for rockingand longitudinally shifting said rock shaftand the supported motor and cone of gears, and a locking member withslots adapted to receive said handle.

- 3. Ina variable speed driving mechanism,

the combination of a driven gear, a motor,

1a cone of driving gears on the shaft thereof,

a nd anextra pulley also on the shaftof the motor, a'longitudinallymovable rock shaft v supportingsaid motor and cone of gears, an

"operating handle for rocking and longitudinally shifting said rockshaft and the supported motor and cone of gears, and a'memthereof can;engage jthegdrivengear, so that the vmotors-may be disconnected from theher adapted to holdsaid handlejfyvit-h the cone of' "i such positionithat none' driven gear when it is desired to driveffroin the pulleyalone. v

4. In a variable speed driving mechanism,

the combination ith a-supp'ortmg structure,

a cone of gears, and a gear adapted tobe engaged selectively therewith;of abracket pivoted to said supporting structure, a shaft slidablybutnot rotatably mounted in said bracket at' the pivotal axis thereof saidshaft supporting and carrying in its movements one of theabove-mentioned gear parts, and 1 an operating lever pivotedto saidbracket on an axis perpendicular tothe pivotal axis of the bracket, soastobe capable of rocking; the latter, and connected with said shaft soas to be capable of sliding the same in the bracket. v i

5. In a variable speed driving mechanism, the. combination with a drivengear, a treat 'dle, and driving connection between said treadle and thedriven gear, of a motor and a cone of driving gears, a longitudinallymovable rock shaft supporting said motor and cone of gears, an operatinghandle for rocking and longitudinally shifting said rock shaft and thesupported motor and cone the county, city and State of New York,

this 6th day of December A.'D. 1907. I PAUL T. KENNY.

'Witnessesr- I OHAmlEs FREL OEHR, I R0M0LA GoRnoN.

